from 01.01.2024 until now
German Research Center for Geosciences (GFZ)
Russian Federation
UDC 550.312
UDC 55
UDC 550.34
UDC 550.383
CSCSTI 37.01
CSCSTI 37.15
CSCSTI 37.25
CSCSTI 37.31
CSCSTI 38.01
CSCSTI 36.00
CSCSTI 37.00
CSCSTI 38.00
CSCSTI 39.00
CSCSTI 52.00
Russian Classification of Professions by Education 05.00.00
Russian Library and Bibliographic Classification 26
Russian Trade and Bibliographic Classification 63
BISAC SCI SCIENCE
This study presents refined models of the sedimentary cover in northern Eurasia, derived using decompensative gravity anomalies (DGA). The DGA-based models enhance the structural resolution of regions with complex geology, accurately delineating denuded mountain-folded zones, thick sedimentary sequences, and basin depocenters that are not well resolved in the initial datasets. In offshore areas, such as the Laptev Sea Basin, South Kara Basin, and Yamal–Taz Basin, the models provide improved estimates of sedimentary thickness and clearer delineation of major faults and rift structures compared to global datasets like GlobSed. For continental basins, the models reveal localized depocenters and subtle variations in thickness, supporting more detailed structural and stratigraphic interpretations. While these models offer substantial improvements, uncertainties increase with depth due to the lower density contrasts between deep sedimentary layers and the crystalline basement. Intermediate Late Paleozoic–Early Mesozoic units and contributions from the upper folded basement can also affect thickness estimates, highlighting the qualitative nature of the models for deep basins. Despite these limitations, the DGA-based models provide a valuable tool in regions with sparse borehole and geophysical data, filling gaps in coverage and enhancing the understanding of basin geometry. These refined sedimentary cover models offer a robust framework for lithospheric and basin modeling, enabling more accurate reconstructions of basin architecture and tectonic evolution across both continental and shelf regions.
Sedimentary cover, gravity field, decompensative gravity anomalies, Northern Eurasia
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